e94584858 scripted-diff: Use new naming style for insecure_rand* functions (Pieter Wuille)
2fcd9cc86 scripted-diff: Use randbits/bool instead of randrange where possible (Pieter Wuille)
2ada67852 Use randbits instead of ad-hoc emulation in prevector tests (Pieter Wuille)
5f0b04eed Replace rand() & ((1 << N) - 1) with randbits(N) (Pieter Wuille)
3ecabae36 Replace more rand() % NUM by randranges (Pieter Wuille)
efee1db21 scripted-diff: use insecure_rand256/randrange more (Pieter Wuille)
1119927df Add various insecure_rand wrappers for tests (Pieter Wuille)
124d13a58 Merge test_random.h into test_bitcoin.h (Pieter Wuille)
90620d66c scripted-diff: Rename cuckoo tests' local rand context (Pieter Wuille)
37e864eb9 Add FastRandomContext::rand256() and ::randbytes() (Pieter Wuille)
Tree-SHA512: d09705a3ec718ae792f7d66a75401903ba7b9c9d3fc36669d6e3b9242f0194738106be26baefc8a8e3fa6df7c9a35978c71c0c430278a028b331df23a3ea3070
There are only a few uses of `insecure_random` outside the tests.
This PR replaces uses of insecure_random (and its accompanying global
state) in the core code with an FastRandomContext that is automatically
seeded on creation.
This is meant to be used for inner loops. The FastRandomContext
can be in the outer scope, or the class itself, then rand32() is used
inside the loop. Useful e.g. for pushing addresses in CNode or the fee
rounding, or randomization for coin selection.
As a context is created per purpose, thus it gets rid of
cross-thread unprotected shared usage of a single set of globals, this
should also get rid of the potential race conditions.
- I'd say TxMempool::check is not called enough to warrant using a special
fast random context, this is switched to GetRand() (open for
discussion...)
- The use of `insecure_rand` in ConnectThroughProxy has been replaced by
an atomic integer counter. The only goal here is to have a different
credentials pair for each connection to go on a different Tor circuit,
it does not need to be random nor unpredictable.
- To avoid having a FastRandomContext on every CNode, the context is
passed into PushAddress as appropriate.
There remains an insecure_random for test usage in `test_random.h`.
Make sure that chainparams and logging is properly initialized. Doing
this for every test may be overkill, but this initialization is so
simple that that does not matter.
This should fix the travis issues.
